Designers and Engineers

Orenco has numerous resources to help designers and engineers design all kinds of wastewater systems.

Designers and Engineers

We're engineers too, and we want to see your wastewater plan work well, in the long term, as much as you do. Whether you have a challenging application needing compact wastewater treatment, or a subdivision in need of a collection option, our engineers have resources available to help you complete your design. Orenco holds design trainings across the country as well as at our headquarters in Oregon.

Below you will find some of the tools Orenco provides to make your job easier. Be sure to check out our Document Library for even more.

Design Aid Package 

Orenco Systems’ Design Aid Package is an invaluable tool for designers of onsite wastewater treatment systems. All items are provided in a viewable (PDF) format and in an editable (DWG) format, so that you can “cut and paste” to drop our drawings into your plans and specs. To open DWG files, you will need either AutoCAD® 2000 or above or a DWG viewer. We have included both a DWG viewer, eDrawings™ (available for free at, and the PDF viewer Adobe® Reader® (available for free at on our CD-ROM.

Request a Design Aid Package


Our free PumpSelect software program provides fast, error-free hydraulic calculations and generates system curves for sizing pumps and configuring transport and distribution lines. Two PumpSelect programs are included: one for pressurized systems and one for nonpressurized systems. 

Download PumpSelect 

EasyPak Select™

Our EasyPak™ Design Aid CD-ROM, including a brand new EasyPak Select software program, helps designers select the correct EasyPak system for the application. This new program calculates the correct pump flow rate and total dynamic head for the system.

Download EasyPak PumpSelect

AdvanTex Residential Design Aid Package

The AdvanTex Residential Design Aid Package and CD-ROM is a design and engineering package for residential wastewater treatment, featuring the AdvanTex AX20 Textile Treatment System. It includes brochures, drawings, technical data sheets, performance summaries, design criteria, case studies, and published research. It also includes sample operation, installation and maintenance manuals as well as a sample warranty. The AdvanTex Residential Design Aid Package also includes a CD-ROM and two DVDs. The CD-ROM includes all the AX20 drawings included in the binder in both AutoCAD and PDF format, along with several standard AdvanTex documents in PDF format. The two DVDs are a system overview for customers ("Dependable, High-Performing AdvanTex Treatment Systems"), and a video installation guide for installers ("AdvanTex Installation").

Request an AdvanTex Design Aid Package

Technical Data Sheets

Technical Data Sheets, installation instruction and manuals are located in the Document Library.

Designer/Engineer Newsletter

Once or twice a month, Orenco e-mails a brief Designer/Engineer Update with announcements of new products and technologies, case studies, performance data, updated documentation, and other information of interest to system designers. Read the archives or subscribe at the Designer/Engineer Update page.

Additional Resources

Technical Resources

“I’ve always liked the proactive approach that OSI takes. I have two criteria regarding any product specifications: the product does the job and the company provides technical support. OSI excels in both, which makes me look good and my clients happy.” 

— David Monihan, Jr., PE, RLS, Arizona